Jeep Cherokee 1999 Electronic Service Manual page 1238

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REM OVAL AN D I N STALLAT I ON (Cont inue d)
IDLE AIR CONTROL (IAC) MOTOR
Th e IAC m ot or is loca t ed on t h e side of t h e t h r ot t le
body (F ig. 44) or (F ig. 45).
REMOVAL
(1) Rem ove a ir clea n er t u be a t t h r ot t le body.
(2) Discon n ect elect r ica l con n ect or fr om IAC m ot or.
(3) Rem ove t wo m ou n t in g bolt s (scr ews) (F ig. 48).
(4) Rem ove IAC m ot or fr om t h r ot t le body.
Fig. 48 Mounting Bolts (Screws)—IAC Motor
INSTALLA TION
(1) In st a ll IAC m ot or t o t h r ot t le body.
(2) In st a ll a n d t igh t en t wo m ou n t in g bolt s (scr ews)
t o 7 N·m (60 in . lbs.) t or qu e.
(3) In st a ll elect r ica l con n ect or.
(4) In st a ll a ir clea n er t u be t o t h r ot t le body.
MANIFOLD ABSOLUTE PRESSURE (MAP)
SENSOR
Th e MAP sen sor is m ou n t ed t o t h e side of t h e
t h r ot t le body (F ig. 44) or (F ig. 45). An L-sh a ped r u b-
ber fit t in g is u sed t o con n ect t h e MAP sen sor t o
t h r ot t le body (F ig. 49).
REMOVAL
(1) Rem ove a ir clea n er in t a ke t u be a t t h r ot t le
body.
(2) Rem ove t wo MAP
(scr ews) (F ig. 49).
(3) Wh ile r em ovin g MAP sen sor, slide t h e r u bber
L-sh a ped fit t in g (F ig. 49) fr om t h r ot t le body.
(4) Rem ove r u bber L-sh a ped fit t in g fr om MAP sen -
sor.
INSTALLA TION
(1) In st a ll r u bber L-sh a ped fit t in g t o MAP sen sor.
(2) P osit ion sen sor t o t h r ot t le body wh ile gu idin g
r u bber fit t in g over t h r ot t le body va cu u m n ipple.
sen sor m ou n t in g bolt s
Fig. 49 MAP Sensor Mounting
(3) In st a ll MAP sen sor m ou n t in g bolt s (scr ews).
Tigh t en scr ews t o 3 N·m (25 in . lbs.) t or qu e.
(4) In st a ll a ir clea n er in t a ke t u be.
DUTY CYCLE EVAP CANISTER PURGE
SOLENOID
Refer t o Gr ou p 25, E m ission Con t r ol Syst em for
r em ova l/in st a lla t ion pr ocedu r es.
POWERTRAIN CONTROL MODULE (PCM)
Th e P CM is loca t ed in t h e en gin e com pa r t m en t
n ext t o t h e a ir clea n er a ssem bly (F ig. 50).
Fig. 50 PCM Location
REMOVAL
To a void possible volt a ge spike da m a ge t o t h e
P CM, ign it ion key m u st be off, a n d n ega t ive ba t t er y
ca ble m u st be discon n ect ed befor e u n plu ggin g P CM
con n ect or s.
(1) Discon n ect n ega t ive ba t t er y ca ble a t ba t t er y.
FUEL SYSTEM 14 - 47